If you bet 2x kelly of your fixed bankroll long term, you are guaranteed to bust!

heheh. That's fun to write a toy simulator for:

-lines of code-

That is an interesting analysis, though in reality it is a lot more easy to have "won all the money in the world" for 2 reasons. 1. There won't be 1e40 times of your initial investment in the world available for you to win.2. Even with a 2x or 3x or 10x Kelly setup, very few bets are that huge. Most of the bets are of a size of just a tiny tiny fraction of max profit.